June 30, 2006
Confidential
Document Number BDTM10001-A05 Standard
BelAir100 User Guide
Performing a Software Upgrade
been committed. After the new software load has been committed, you can no
longer back out of the upgrade; but you can downgrade the unit. For
instructions on how to downgrade a unit, contact BelAir Networks.
Figure 8: Software Upgrade Step 7 - Commit the Software Load
The
commit
command copies the system software and the configuration
database to the adjacent bank at the time of execution. However, changes to
the active load’s configuration after the
commit
command is executed are not
automatically stored in the standby bank. To keep both banks synchronized, you
must use the
commit
command after every configuration change of the active
load.
Backing Out from
a Software
Upgrade
It is possible to back out from a software upgrade in case its effects are
undesired, but only if the new software load has not been committed. See
Figure 9 on page 104.
BelAir Unit
A
B
Standby
Software Load
Active
Software Load
Active
Software Load
Pointer to software
load for next restart
Commit: Overwrite old software
load in the standby bank